add update mask
seabios: update to e8a76b0f225bba5ba9d63ab227e0a37b3beb1059

This patch updates seabios to latest git master.  Changes:

  (1) q35 patches merged.
  (2) some acpi cleanups.
  (3) fixes irq 8 conflict.

(3) makes this a candidate for the stable branch

Cc: qemu-stable@nongnu.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit d081621d7cc9ff2274415add7ed1d166954cf9d0)
(cherry picked from commit 89ee98cc2d81762fea177148a7b1db56b574d273)
fix set status